How to be a good empiricist : a plea for tolerance in matters epistemological / P.K. Feyerabend -- The terms and sentences of empirical science / G. Schlesinger -- Explanation in science and in history / Carl G. Hempel -- The structure of teleological explanations / Ernest Nagel -- Meaning and action / May Brodbeck -- Safety, strength, simplicity / Nelson Goodman -- Inductive simplicity / Robert Ackermann -- Self-supporting inductive arguments / Max Black -- The circularity of a self-supporting inductive argument / Peter Achinstein -- On the new riddle of induction / S.F. Barker and Peter Achinstein -- Positionality and pictures / Nelson Goodman -- The paradox of confirmation / J.L. Mackie